Usage patterns
〈場所〉の深さを測るto measure the depth of a place
I measured the depth of this river.
深さがあるto have depth (physical or figurative)
His words have real depth to them.
〈数〉メートルの深さa depth of ~ meters
This pool has a depth of two meters.
深さを増すto increase in depth
The more we discussed it, the more the depth of the problem grew.